comet server in python, supporting websockets, webhooks, and message queues, restful interface. Comet protocol looks custom thought. include client-side abstraction layer without automatic fallback.

"Zed Shaw’s Mongrel2 is shaping up to be a really interesting project. “A web server simply written in C that loves all languages equally”, the two most interesting new ideas are the ability to handle HTTP, Flash Sockets and WebSockets all on the same port (thanks to an extension to the Mongrel simonw says "HTTP parser that can identify all three protocols) and the ability to hook Mongrel2 up to the backend servers using either TCP/IP or ZeroMQ. I’m guessing this means Mongrel2 could hold an HTTP request open, fire off some messages and wait for various backends to send messages back to construct the response, making async processing just as easy as a regular blocking request/response cycle."

hi performance minimal queu protocol

geek bling for radiolab

redis-backed queue for reasonably heavyweight jobs with a simple ruby interface.

AQMP-backed django queue/process distribution. somewhat like carrot, but with return values from deferred functions stored in memcached/sql/tokyo cabine

high performance pure-python queue client and server. very sleek and purportedly fast. co-routine based.

"engine is a collection of tools for processing a queue. It provides an API to
defer a callable and run it later. engine also provides process helpers to
set up a safe environment for clearing different kind of queues."

why queues are trendy

do your slow geocoding etc ion the background.

message queues for stateless fun